Apparatus for mashing and brewing.



No. 670,730. V| am,||m| Mar. '26,-|9o|.

L. PROCHAZKA.

APPARATUS FOB MASHING AND BREWING.

(Application led Apr. 2, 1900.) (Ho Mtusdel.) 3 Sheets-SheexL m: camskrans ou. pHoro-umu.. www", nf c.

3 Sheets-Sheet 2.

Patented Mar L'. PRocHAzKA.

APPARATUS FOB MASHING AND BREWING. (Applicatmn led Apr. 2, 1900.)

(R0 Mndnlj Patanted Ma.26, 190|.

APPARATUSTOR MASHING 'AND BREWNG.

(Application med Amps, 1900. (No Model.) 3. Sheetsj-Shoef 3.

1n: ummm Pula: momma. msumawn. n. z:A

NiTn STATES PATENT OFFICE.

LADISLAV PROCHZKA, GF TURNAU, AUSTRlA-HUNGARY.

APPARATUS FOR MASHING AND BREWING.

SPECIFICATION forming part of Letters Patent N0. 670,7 30, dated March26, 1901.

Original application led May 21, 1897, Serial 110.637,617. Divided andthis application filed April 2, 1900. Serial No. 11,220. (No model.)

To a/ZZ whom, t mln/y concern:

Beit known that I, LADIsLAv PRocHZKA, a subject. of the Emperor ofAustria-Hungary, residing atTurnau, Province of Bohemia, and Empire ofAustria-Hungary, have invented certain new and useful Improvements inApparatus for Mashiug and Brewing, of which the following is aspecification.

This invention relates to improvements in apparatus for mashing andbrewing and is a division of my application for United States LettersPatent led May 2l, 1897, Serial No. 637,617; and the object of theinvention is to provide an apparatus specially designedto effect theoperations of mashing and brewing in such a manner that a greater yieldshall be obtained than has heretofore been considered possible, and theresulting beer shall not be liable to become muddy or cloudy.

In order that the invention may be clearly understood, I will proceed todescribe the same by aid of the accompanying drawings, in which- Figure1 is a section of a brewing plant on the line X X, Fig. 2, showing theapparatus itself in elevation. Fig. 2 is a sectional plan of Fig. l.Fig. 3 is a vertical central section, partly in elevation, of a rotarystrainer hereinafter referred to. Fig. Liis a plan of the said strainer.Fig. 5 is an enlarged detailed plan View showing more particularly theboiling-pan and hot and cold air pipes. Fig. 6 is a similar Viewdisclosing more especially the hop-back hot-air-injecting pipes.

a is a filling-pipe for the mash-tun, b is the said tun, c is a draw-offpipe from said tun, d is a rotary strainer to which said pipe leads, ande is a shaft for driving said strainer. This rotary strainer d, which isshown more clearly in Figs. 3 and 4, is, as stated, connected, throughthe pipe e, with the mashtun. The lower end of this pipe c is tightlyinserted into an annular bearing d', secured to the iianged edge of asheet-metal casing or tank d2, which is supported by angle-iron-V legsds and is strengthened by angle-irons.

The inner `end of the said bearing d is fittedl with a stuffing-box d4upon a shaft d5, on which the conical wire drum `forming the strainer dis mounted. The one end of the shaft d5 is supported in the bearing d.The

opposite end of the shaft d5 rests in an ordinary bearing d6, supportedby brackets C17,

riveted to the side ot' the casing, and by the wide flange d3 on thesaid casing. The narrow end of the drum d is closed by a disk or navedg, secured to the shaft d5, while its wider end is connected with asheet-metal cylinder d10, fastened to the shaft by means of its nave du.Stiiening-ribs CP2 extend Aalong the sides of the drum and have securedto them by means of wires the metal strip or helix dlg. By means of thebelt-pulley d, driven from the main shaft e, a slow rotary movement ofabout twenty revolutions per vminute is imparted to the drum.

dlrepresents holes in the shaft d5, and P6 is an inclined gutter carriedby braces dm.

dlg is a pipe leading into the tank d2.

C119 represents slots or openings for admitting 4ltered solid mattersinto a deliverychute d20, whence they pass to a vat C121, having anagitator (W and a slide-valve (V3.

fis a pump having its suction-pipe f' connected to the valve-case of theslide-valve CPS, by which the vat dal is under ordinary circumstancesclosed at its conical bottom. f2 is the delivery-pipe of the said pump,and f3 is a crank driven from the main shaft e, by which the pump isoperated.

gis a boiling-pan, g is the furnace thereof, g2 is the furnace-due, andg3 is a shaft for working an agitator in said boiling-pan.

h is a second pump, also driven by the shaft e and connected throughpipes h h2 and av cock (V4 with the strainer-casing cl2. Itsdelivery-pipe h3 extends upward and opens into the mash-tun b. When thispump is put into action to pump the extract into the tun, the cock h4 ofthe pipe h3 is opened and the cock h5 of the branch pipe h, leading tothe boiling-pan g, is closed. When, however, the pump is used to forcethe contents of the boiling-pan into the mash-tun, these cocks areoperated accordingly. The height at which the cock C124 is placed abovethe inclined bottom of the tank d2 enables the drawing od the wort inthe latter without disturbing the sediment. (See Fig. 3.) y

'L' is a blowing-engine which delivers air into a series oi heaters,which may beribbed or gilled pipes fi', located within the iiue g2, andthe air thus heated flows out through the fine perfor-ations of a branchpipe t2, extending into the pan g. Through the pipe i3, branched oddirectly from the blower z' and also open- IOO tilt i ing into theperforated pipe i2, so much cold air is admitted as is required toobtain the temperature of l25centigrade, the cock #controlling the flowof cold air.

m is a hop-back which receives the wort through a cock 7c and pipe lr'.(Shown in dotted lines, Fig. l.)

j is a draw-off pipe connecting the boilingpan and the tun b andcontrolled by the cock c. In the hop-back is a branched pipe m forinjection of hot air, which is led to it through apipe m2, connectedwith the pipe t". Through a pipe m3, connected with the cold-air pipei3, cold air is mixed with the hot air to regulate its temperature.

m4 represents cocks for regulating the mixing and the flow of the hotand cold air.

The process which this apparatus is designed to carry out is as follows:After a preliminary mashing operation the wort or extract is separatedfrom the solid matters and the latter are subjected to special treatmentto thoroughly liberate all the residual starch and convert thealbuminous matters into a permanently-soluble form by the action of hotair. After this the treated matters and the original extract are broughttogether, so that the diastase in the latter may convert thenewly-liberated starch, whereupon the Whole is heated to kill thediastase, and hot air is again forced through it to iinely oxidize anyremaining albuminous matters. The Wort is thus brought into a veryfavorable condition for the subsequent operations and is freed from anymatters which might set up clouding in the beer produced.

The action of the apparatus is as follows: Malt and water are admittedthrough the pipe a to the tun b in the proportion, say, of one hundredkilograms of malt to four or 4.5 hectoliters of water, and the mashingoperation continued about an hour, the same being maintained at atemperature of from 50 to O centigrade. The mixture is then conducted bypipe c to the strainer d, Fig. 3, and then the coarse matter passesthrough the chute d20 to the vat CW and from said Vat through the pipe fvia the pumpf to the pan g. The strained liquid passes into the tank d2,and after settling therein is led to the tun b through the cock e124,pipes h2 and h', pump h, and pipe h3, connecting the tun and tank.Sediment collecting at the bottom of the tank d2 is pumped through thepipe f via the cock C325 into the pan g along with solid matter from'the vat d. In the pan g the solid matter is boiled with water and at thesame time treated with injected hot air from the blowing-engine t',whereupon a certain portion thereof goes into solution. Said solution isled to tun b, (by pipe h', pump h, and pipe 713,) where the starchcontained therein is converted into sugar by Virtue of the diastasecontained in the liquid or liquor previously introduced into tun b fromthe tank d2, as above stated. When conversion is effected in the tun b,the liquor is led therefrom to pan g by pipe 7',

where it is properly boiled. After boiling it is led back to the tun bby pipe h' by the action of the pump h, and thence by pipe la to thehop-back fm, where it passes through a body of hops, and is alsosimultaneously acted upon by hot air injected through the pipe m, afterwhich it is conducted away for storage,

What I claim, and' desire to secure by Letters Patent, is-

l. The apparatus of the character described, comprising a mash-tun, arotary strainer, a casing beneath said strainer to receive the ltrateand allow it to deposit sediment, a boiling-pan, means for blowing hotair th rough the contents of said boiling-pan, pumps for transportingthe extract and residues from one to the other of these parts, and meansfor altering the connections of said pumps accordingly, substantially asdescribed.

2. In apparatus of the character described, the combination of a mashtun, a rotary strainer, a boiling-pan, a hot-air pipe in the flue ofsaid boiling-pan, an air-pu mp for forcing air through said pipe intosaid boilingpan, a branch pipe for leading cold air direct from saidair-pump to the hot air from the hot-air pipe, and a cock in such branchpipe for controlling the flow of cold air and so regulating thetemperature of the air blown into the boiling-pan, substantially asdescribed.

3. In apparatus of the character described, the combination of a conicalWire strainer, a rotary shaft passing through said strainer, means foradmitting wort through one end of said shaft, a revolving helix carriedby said strainer and serving to eject the solid residues therefrom, avat to receive said residues, means for diluting and agitating saidresidues in said vat, a tank with inclined bottom to receive thefiltrate and allow it to deposit sediment, and means for uniting saiddiluted residues and sediment, substantially as described.

4. In apparatus of the character described, the combination of a conicalstrainer, a rotary hollow shaft carrying said strainer and perforated atits contracted end, a metal helix inside of said strainer, a metalcylinder arranged at the enlarged end of said strainer, a tank arrangedbeneath said strainer and having an inclined bottom for collectingsediment, a stirring-vat for receiving the solid residues from theconical strainer, slide-Valve for discharging such residues from saidvat, a cock for withdrawing the sediment from the inclined bottom ofsaid tank, apipe in which said sediment is mixed with the solid mattersfrom the stirring-vat, and means for Withdrawing the strained andsettled extract from 'the tank without disturbing the sediment,

substantially as described.

In testimony whereof I have hereunto set my hand this 19th day of March,19,00.

LADISLAV PROOHAZKA. Witnesses:

CnAs. B. BUaDoN, WALTER J. SKERTEN.

IOO

IIO

